Maddening part is eye doctors usually dont think much of such disturbances. There are four key entoptic phenomena.

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Healthy subjects experience entoptic phenomena but visual snow syndrome sufferers experience them to an excessive extent.

Blue field entoptic phenomenon anxiety. The blue field entoptic phenomenon white blood cells that can be seen in movement is very obvious and distracting now. Floaters blue field entoptic phenomenon self light of the eye and spontaneous photopsia. Palinopsia visual trailing and afterimages enhanced entoptic phenomena floaters photopsia blue field entoptic phenomenon self light of the eye photophobia.

The blue field entoptic phenomenon or scheerers phenomenon after the german ophthalmologist richard scheerer who first drew clinical attention to it in 1924 is the appearance of tiny bright dots nicknamed blue sky sprites moving quickly along squiggly lines in the visual field especially when looking into bright blue light such as the sky. That was the trigger that started me focusing on my eyes 247. Computer screens lamps.

I started to notice all my floaters all the time whereas they hadnt been bothering me new floaters id never seen. Additional visual symptoms of at least two of the following four types. I still finds hundreds of people discussing this on forums online where it does seem to be rather normal.

Entoptic phenomena are visual phenomena that arise from the structure of the eye itself. I got very scared. Ines is a phd student researching insect flight at oxford and enjoys making videos about the fun and curious bits of science in her spare time.

Then one afternoon i noticed the blue field entoptic phenomenon while looking out of a window. I didnt know what it was or that it was normal. I have been dealing with tons of anxiety and depression.

Theres a variety of visual problems and disturbances we all experience on a daily basis. With simulations ines will run through all of them. Pretty thick with scientific know how but a good read.

This is an in depth article on blue field entoptic phenomenon. I see it almost everywhere. Dots of light darting about is called the blue field entoptic phenomenon because its easiest to see against a uniform blue field.

Ive been experiencing weird things with my vision advice would be appreciated. I get anxiety from itso am on an anxiety med. Dynamic continuous tiny dots in the entire visual field.

So a while ago i started experiencing blue field entoptic phenomenon except it can be on any colour as. Oftentimes when our patients are sitting behind the slit lamp during a routine examination we hear them cry wow i can see the reflection of my blood vessels the image that appears to them is an instance of entoptic phenomena ep a phrase derived from the greek words inside and. Why did the blue field entoptic phenomenon become much more obvious after taking accutane.

Meet the culprits behind bright lights and strange floaters in your vision. Once again it points to just how normal this phenomenon is.

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Have you observed bright colored lights when rubbing your eyes? Have you seen transparent stringy particles floating midair when looking at the sky? Have you wondered if they are actually there? Or, are your eyes are fooling you? The answer is no; they aren’t there, but — your eyes aren’t fooling you either. These visual effects are called entoptic phenomena, derived from Greek, ento (within), and optic (eye). Therefore, entoptic means occurring within or inside one’s eye. 

The renowned German scientist Hermann von Helmholtz once said, “under suitable light conditions light falling on the eye may render visible certain objects within the eye itself. These perceptions are called entoptical.” Interestingly, this phenomenon is purely subjective. They cannot be observed by an eye doctor using an instrument and cannot be photographed. Sometimes the phenomenon can be used to monitor eye diseases, but most occurrences are unconcerning. In this post, we discuss three commonly observed phenomena and how to differentiate these occurrences from the abnormal ones. 

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Pressure Phosphenes

​Rub your eyes by applying mild pressure using your index finger while keeping them closed. Do you see stars or circular shaped patterns moving opposite the direction of the pressure surrounded by bright multicolored lights? These patterns are called pressure phosphenes. We encounter them when rubbing our eyes upon waking up. 

The word phosphene is derived from two Greek words; phos (light) and phainein (to show). This is the only phenomenon that occurs in the absence of light entering our eyes. We usually see things because light reflected off of surfaces enter our retinas, the backscreen in our eyes, and stimulate retinal ganglion cells that carry information to our brain to process what we see. So, how do we see light when there is no light entering our eye? Vision science researchers believe the mechanical stimulation caused by applying pressure on our eyes stimulates those same retinal ganglion cells.  The cells think they perceive light, and we see several multicolored lights and shapes.

While seeing pressure phosphenes is normal, they should not be confused with flashes of light or aura seen in certain types of migraines and other conditions such as a posterior vitreous detachment or retinal detachment, where certain layers of deeper retina are peeling away. Phosphenes or star-shaped patterns can also be seen after a hard sneeze, a deep cough, a blow to the head, or low blood pressure as there might be mechanical or metabolic (low glucose or oxygen) stimulation of the visual nerve cells. These can also be perceived by meditators and by those who ingest psychedelic drugs. 

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Blue Sheer Phenomenon

Have you noticed a small number of circular or squiggly transparent shapes when gazing at the blue sky or on a uniformly bright background like a computer screen or a mobile phone? What do you think caused you to see them? Blue light from the sky enters our eyes and is blocked by red blood cells as they absorb all colored lights and allow only red light to pass. However, since white blood cells are transparent, they allow blue light to pass through them. This light further excites the retinal cells. So, the small transparent shapes we see are actually our white blood cells moving along the thin retinal blood vessels. As red blood cells are not transparent, we sometimes see dark patterns floating next to the transparent shape when observed carefully against a uniformly bright pattern. 

Blue field or Sheerer phenomenon is observed only during daylight with open eyes and does not impair vision. However, this should not be confused with visual snow, where small white, black, or multicolored spots are seen in a television static fashion across the entire visual area for long periods. Visual snow usually presents with migraines, can impair vision, and is perceivable even when dark. While the exact cause is unknown, it is believed that visual snow is caused by excessive excitation of neurons, the nerve cells, in our brain and requires immediate medical treatment.

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